Method of determining the practically useful application dose of pesticide, method of developing pesticide and method of indicating the performance of pesticide

a technology of pesticide and application dose, which is applied in the field of determining the practical useful application dose of pesticide, the method of developing pesticide and the method of indicating the performance of pesticide, can solve the problems of large equipment costs and personnel expenses, long time-consuming testing, and difficult for consumers to choose the most appropriate on

Inactive Publication Date: 2004-07-15
THINK CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

0004] In view of the above circumstances, the present inventor has discovered a method for evaluating the relative performance of a pesticide and a method for determining a practically useful application dose very inexpensively

Problems solved by technology

In the conventional method, however, vast amounts of equipment costs and personnel expenses and a long time of testing are necessary for a plurality of dosages of a pesticide and repetition of a large number of large-scale tests; it has been desired to develop a method for determining the practically useful application dose of a pesticide more conveniently, less expensively, and more acc

Method used

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  • Method of determining the practically useful application dose of pesticide, method of developing pesticide and method of indicating the performance of pesticide
  • Method of determining the practically useful application dose of pesticide, method of developing pesticide and method of indicating the performance of pesticide

Examples

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Effect test

example 1

[0087] Using the potency data given in the 1997 Agricultural Chemical Test Results Report, the practically useful application dose of NC-1111 (code number for an acaricide being developed by Nissan Chemical Industries, Ltd.) for female adults of the citrus red mite is determined. Sanmite.RTM. (a commercially available acaricide developed by Nissan Chemical Industries, Ltd.) serves as the control pesticide.

[0088] Bioassay tests are conducted using Citrus natsudaidai Hayata as the test crop. In concentration-mortality curve testing, female adults of the citrus red mite (Oiso colony, susceptible strain) are inoculated to tangerine leaf discs of 27 mm in diameter; the discs are placed in a constant-temperature room at 25.degree. C., and after 24 hours passed, all other than healthy female adults are removed. The specified liquid agent is applied using a sprayer, and the discs are placed in a constant-temperature room at 25.degree. C. The mortality is determined 24 hours after applicatio...

example 2

[0110] The equations and tables used in Example 1 were previously inputted in the respective cells of the spreadsheet program Excel.RTM. (Microsoft). In one worksheet, Tables 1, 2 and 3 and FIGS. 2 and 3 used in Example 1 were appropriately arranged. A spreadsheet was generated, having three lines for "name of agent," "name of pesticide," and "name of control pesticide" vertically arranged under these tables and figures, and also having a total of 13 columns laterally arranged for "name of agent" (overlapping), "application concentration (ppm) in concentration-mortality curve testing," "preventive value (%) corresponding to the application concentration," "application concentration (ppm) in residual activity testing," "number of days after treatment (days)," "decreasing constant," "half-life (days)," "effective preventive value (%) based on allowable damage level in residual activity testing," "applied liquid agent concentration (ppm) corresponding to the preventive value," "practic...

example 3

[0112] In developing a new pesticide, the practically useful application dose of a developmental candidate compound A for actual situation (represented by the useful application dose to ensure the duration and effect equivalent to those obtained by treatment with 100 ppm of fenvalerate.RTM. herein) is determined to be 50 ppm, from the results of indoor concentration-mortality curve testing and outdoor residual activity testing using third-instar larvae of the common cutworm (Spodoptera litura Fabricius) fed on pot-planted cabbages using as the control pesticide fenvalerate.RTM. in the practically useful application dose of 100 ppm, in the same manner as in Example 1. By employing the method of the present invention, the practically useful application dose of the developmental candidate compound A can be determined on Day 14 after the candidate compound was firstly synthesized.

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PUM

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Abstract

The present invention provides a method for calculating a practically useful application dose, with which a desired residual activity period and desired effective preventive value can be retained, by comparison with a control pesticide in obtaining an equivalent useful application dose by conversion by correlating a decreasing constant of a pesticide obtained from the results of residual activity testing conducted in actual situation for use or under environmental factors corresponding to the actual situation, and a damage rate or a damage suppression rate to the results of concentration-mortality curve testing, a method for developing a pesticide, and a method for indicating the performance of a pesticide.

Description

[0001] The present invention relates to a method for determining the practically useful application dose of a pesticide, a method for developing a pesticide, and a method for indicating the performance of a pesticide.[0002] Conventionally, the practically useful application dose of a pesticide has been determined on the basis of reliable data obtained from a large number of large-scale tests repeated in actual situation for use carrying out a test using a plurality of dosages of a pesticide set with reference to the relative potencies, or their basic potencies determined by indoor concentration-mortality curve testing and the like, relative to a control pesticide. In the conventional method, however, vast amounts of equipment costs and personnel expenses and a long time of testing are necessary for a plurality of dosages of a pesticide and repetition of a large number of large-scale tests; it has been desired to develop a method for determining the practically useful application dos...

Claims

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Application Information

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IPC IPC(8): A01M7/00A01N25/00
CPCA01N25/00A01M7/0089
Inventor KISIDA, HIROSI
Owner THINK CHEM
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